Sodium metasilicate 9AQ
General Product Information
| Artikel | Sodium metasilicate 9AQ |
| Synonyms | Sodium metasilicate nonahydrate |
| CAS No. | 13517-24-3 |
| EEG No. | – |
| EINECS No. | 229-912-9 |
| IMO | Class 8 (C) |
| Tariff Code | 28391100 |
| UN No. | 3253 |
| VLG/ADR | Class 8, Packing Group III |
Description
Sodium metasilicate 9AQ, also known as sodium metasilicate nonahydrate, is a white, crystalline, inorganic powder. It is a hydrated form of sodium metasilicate with excellent solubility in water and strong alkaline properties. The product is widely used in industrial cleaning, Water Treatment, building materials and as an admixture in various manufacturing processes .
Also available:
Sodium metasilicate 0AQ (Technical Grade),
Sodium metasilicate 5AQ (Technical Grade)
Characteristics
- Odor: Odorless.
- Hygroscopic: Yes.
- Color: White.
- Grade: Technical.
- Solubility: Highly soluble in water.
- Shape: Crystalline powder.
Physical & Chemical Properties
| Chemical Structure | Na2SiO3-9H2O |
| Molar Weight | Approx. 284.20 g/mol |
| Melting Point | Approx. 70-100 °C (decomposes). |
| Boiling Point | – |
| Density | Approx. 2.61 g/cm³. |
| Refractive Index | 1,52 |
| pH | Approx. 12.5 (on 1% solution) |
Applications
Sodium metasilicate 9AQ is applied in various ways, for instance:
1. Cleaning Agents
Used as an active ingredient in industrial cleaners, metal cleaners and degreasers; removes grease, oil, rust and dirt.
2. Construction
Improves adhesion and water resistance in cement, mortar and inorganic adhesives.
3. Water Treatment
Prevents scale and corrosion in cooling and heating systems.
4. Paper & Textile Industry
As a bleaching agent and stabilizer at processing and coloring of textile fibers and paper.
Interessing Links
- CAS Common Chemistry – Sodium silicate nonahydrate
- European Chemicals Agency (ECHA) – For chemical information and regulations.
- PubChem – Sodium metasilicate nonahydrate – Chemical information by the National Library of Medicine of the National Center for Biotechnology Information (NIH-NCBI).
- Wikipedia – Sodium metasilicate